Steel grating is an construction material made of flat steel and cross bars arranged at a certain distance and fixed by welding or pressing. It is usually made of carbon steel, and the surface can be hot-dip galvanized, cold-dip galvanized or painted to enhance corrosion resistance.
STEEL GRATING MATERIAL
| Standard | Manufacture Standard | Steel Material Standard | ||
| Bearing Bar | Cross Bar | Stainless Steel | ||
| China | YB/T 4001.1-2019 | GB/T 700 Q235 Q235B | GB/T 700 Q235 | ASTM A240 GR304(L) or GR316(L) |
| USA | ANSI/NAAMM(MBG531-00) | ASTM A1011 CS Type B or ASTM A36 | ASTM A510 | ASTM A240 GR304(L) or GR316(L) |
| British | BS4592 | BS EN 10025 | BS EN 10025 | BS EN 10258 |
| Germany | DIN24537-1 | DIN EN 10025 | DIN EN 10025 | DIN EN 10088 |
| Australia | AS1657 | BS EN 10025 | BS EN 10025 | BS EN 10258 |
HOT DIP GALVANIZATION
| Galvanized Standard | China | USA | ||
| GB/T 13912 | ASTM A123/A 123M | |||
| Material Thickness | 3≤t≤6 | 1.6≤t≤3.2 | 3.2≤t≤4.8 | 4.8≤t≤6.4 |
| Minimum Average Thickness (μm) | 70 | 65 | 75 | 75 |
| Conversion | mils=μmx0.03937 oz/ft²=μmx0.02316 g/m²=μmx7.067 | |||
*The thickness of the galvanized layer can be customized according to customer needs
1. Bearing Bar - Loading carrying bars made from steel strip or slit sheet or from rolled or extruded aluminum, extending in the direction of the grating span.
2. Cross Bar - The connection bars, made from steel strip, slit sheet or rolled bars or from rolled or extruded aluminum, which extend across the bearing bars, perpendicular to them. They're bent into a corrugated or sinuous pattern. Where they intersect the bearing bars, welded, forged or mechanically locked to bearing bars.
3. Bearing Bar Centers - The distance center to center of the bearing bars.
4. Cross Bar Centers - The distance center to center of the cross bars.
5. Band - A flat welded to a side or end of grating panel. Or along the line of a cutout, extending neither above nor below bearing bars.
6. Toe Plate- Also called kick plate. A flat bar attached flat against the outer edge of grating or rear edge of tread. Projecting above the top surface of grating or tread to form a lip or curb. 7. Length - Refer to span of grating.
8. Width - The overall dimension of grating panel. Measured normal to the bearing bars.
